Tabulating mechanism for type-writing machines.



H.- s. DUKES & W. H. CLAYTON.

. TABULATING MECHANISM FOR TYPE WRITING MAGHINES.

APPLICATION rmm JULY 10, 1903.

I 908,221. Patented Deo.29,1908.

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'H. S. DUKES & W. H. CLAYTON. TABULATING MECHANISM FOR TYPE WRITING MACHINES.

APPLICIATION FILED JULY 10, 1903. V

Patented Dec. 29, 1908.

4 SEHTS-SHEETL 3111mm? 1 0365 rd C/afiom H. S. DUKES & W. H. 'OLAYTON. TABULATING- MECHANISM FOR TYPE WRITING MAGHNES.

' APPLICATION FILED JULY 10, 1903.

908,221. Pate ted Dec. 29,1908.

4 SHEETS-SHEET 8.

anozwtow lflv jAjl vtad d H. S. DUKES & W. -H. CLAYTON. TABULATING MECHANISM FOR TYPE WRITING MACHINES.

APPLICATION FILED JULY 10, 1903.

Patented Dec. 29, 1908.

4 SHEETS-SHEET 4.

wild wane UNITED ST TE PATENT GFFICE.

HARRY S. DUKES AND WILLIAM H. CLAYTON, 0b LITTLE ROCK, ARKANSAS.

" TAI-BULATING MECHANISM ron wrnwm'rme MACHINES.

To all whom it may concern.

Be it known that we, HARRY S. DUKES and WILLIAM H. CLAYTON, citizens of the United States, residing at Little Rock, in the- This invention relates to an improved tabulating mechanism for typewriting ma-' chines, and has in view a simple'and practical construction permittin the work of tabu-lating to be easily an effected, with a minimum num nominational keys or selectors.

To this end the invention rimarily' contemplates an auxiliary for ta ulating mechanisms which'reduces the number of denominational keys or selectors to correspond to the number of' factors in each denominational group, whereby eachtabulatingkey or'de- IlOIIllIltltlOIlfil element. is made to have a rangeof action for checkin the carriage at variable distances from a co umn locating or,

predetermined point.

In other words, theinvention has for its general object the provision ofa denominational amplifier or'amplifying device, coop 3Q- erating with the elements of the tabulating mechanism and serving. to amplify the spacmg value, or denominational range, of each tabulating selector or denominational element; I I i v Another object of the invention is to ro'-. vide a denominational amplifier or amp ifying device susceptible of embodiment in any type of tabulatmg mechanism employing a co umn locating element, and a plurality of denominational elements cooperating there-, with and usually representing only one'space or spacing value in the column of matter.

With these and many other objects in view, which will more readily appear as the,

nature of the invention is 'better understood, the same consists in the novel constructlon, combination and arrangement of parts as will be hereinafter more fully described,

illustrated, and claimed. I

. The essential feature of' the invention, as

- above indicated, is susceptible of awide range of modification according to the type of tabulating mechanism, or character of typewriting machine, with which it may be associated, but forillustrative purposes several Specification of Letters Patent.

Application filed July 10, 1963.

Patented Dec. 29, 1908.

Serial No. 164.993.

practical adaptations or embodiments of the nvention are shown 'in the accompanying drawings, in which- Figure 1 isa skeletonized plan view of a por tionof a book tyv ewritin machine showing the invention a p led to t etri ping form of tabulating mec anism disclosecihn our pending application, Serial Number 142,278, filed Februa 7, 1903. Fig. 2 is a skeletonized sectiona view of the same construction, illustrating in dotted lines the ty e action which cooperates with the carriage t eding mechanism, which feeding mechanism in this form of tabulator.const1tutes the carriage release and check, or stop device, for tabuiating purposes. Fig. 3 is a diagrammatic view of the tripping mechanism showing the normal posit1on of each-denominational element, and of the amplifier cooperating therewith. Fig. 4 is a similar view shon ln in full lines a denominational'element. an the amplifier arranged in set positions with the release lever moved to a position for releasing the carriage and showin in dottedv lines the cooperating elements tripped: to provide for checking or arresting the carriage .by the relocking of the carriage feeding mechanism; Fig. 5 18 a detail in perspective showing more plainly the 0 erative relation between a denominational e ement, and the amplifier .coiiperating therewith. Fi 6 is a detail in perspective of a form of co umn locatin element that may be employed as a part of t e tabulator shown in i the roup of F1gs. l-to 4,, inclusive-.1 Fig. 7 is a si e-view of the column locating element illustrating more plainly the form and position of the trip projection for. operating the individual denominational elements when used alone. .Fig. 8 is a sectional view on the line 8-8 0f Fig. 1, showin more clearly the preferred type of carriage ceding or escapement mechanism which is utilized when the tabulator includes such mechanism as the check or stop for arresting the carriage att-heproper point. Fig. 9 is a detail sectional view on the line 99 of Fig. 2, showing a preferable arrangement of the column arrangin guide; Fig.'10 is a fragmentary view ifiustrating a modification of the constructionshown inthe other figures, wherein the spacing step or steps for the amplifier are carried by the shiftable spacer element of the latter, instead of by thecolumn locating element as shown in Fig. 1. Fig. 11 is 'a' diagrammatic sectional view illustrating the normal operative relation of adenominational element and an amplifier, modified as shown shown'in Fig. 10. Fig. 12 is a detail in perspective of an amplifier constructed to carry its own spacing steps to provide for determin ing the spacing value, or denominational range, of any tabulating key or selector. Fig. 13 is a view similar to Fig. 10 showing another modification of the invention wherein the amplifier is illustrated as associated with an ordinary stop or impact ty e of tabulating mechanism. Fig. 14 is a detail sectional view on the line 1414 of Fig. 13. Fig. 15 is a diagrammatic sectional view showing the normal operative relation of the amplifier to the stop elements of the mechanism shown in Fig. 13. Fig. 16' is a detail in perspective of the form of shiftable spacer element of an amplifier adapted for use in the relation shown in Figs. 13 and 15.

Like reference numerals designate corresponding parts throughout the several figures of the drawings.

in carrying out the invention, the means for arresting the carriage at a given distance from acolumn locating, or predetermined point, may be varied according to the character of typewriting machine with which the improvement may be associated, so it will he understood that the several drawings are illustrative of the various phases which the invention may assume in providing tabulating mechanisms of different construction, and yet embodying the distinctive thought of the present invention, namely', that of.a denominational amplifier for amplifying the spacing value, or denominational range, of each tabulating key, selector, or denominational element, as the same is variously termed, and, hence giving to each denominational element what may be properly termed a plural spacing value in contra istinction to the ordinary tabulators wherein each denominational element represents only one space or spacing value in the column of matter.

'1 he invention possesses marked utility on account of the smallnumber of working parts which need be employed, and the compactness with which they may be arranged in connection with the typevniting -machine. In this aspect, the invention has special utility in connection with book typewriting machines, and also with a tabulating mechanism of the trip type, wherein the carriage feed or escapement mechanism, may be utilized as the carriage release and carria e stop as contemplated by our other application aforesaid. Exemplifying this useful adaptation of the improvement, reference will first be made to the construction illustrated in the group of Figs. 1 to 9, inclusive. In this construction, as shown in the drawings, the numeral 1 designates the bottom plate of the traveling carriage of a book typewriting rack 20 usually carried machine. This carriage usually includes a casing eontainin the printing mechanism, and is su ported y travelersZ running on the front an rear trackrails 3 and 4 of the track frame. The carriage feeding mechanism, as shown, is carried as an entirety by the base or bottom plate 1 of the machine carriage, and includes an upright swinging dog lever 5 havin a suitable pxlvotal support at its-lower end, an carrying t e usual ogs 6 and 7, adapted to be moved, in a lateral direction, into and out of engagement with the teeth of a star wheel 8 loosely mounted on the feed shaft 9. The wheel 8 is provided at one side with a clutch member or face 10, cooperating with a companion clutch member or face 11, carried by a slidable clutch sleeve 12 feathered on the shaft 9, which also has arranged thereon a clutch or pressure s ring 13 exerting its tension in a direction'For normally holding the clutch face 11 engaged with the clutch face 10. 'lhe clutch sleeve 12 isprovided with a grooved collar portion 14 loosely engaged by the inner end 15 of the disengaging member, or release lever, 16 for the carriage feeding mechanism. 'lhis member or lever 16'has a fixed pivotal support, as at 17., and is provided at its outer end with a finger piece 18, exposed to the operator at one side of the carriage, whereby the carriage feedirn or esca ement mechanism may be controlled for re casing and braking purposes, independently of the tabulato'r parts if so desire '1 he feed shaft 9 carries at one extremity a spacing pinion 19 meshing with a stationary with the rear track rail '4. '1 his completes the essential features of the carriage feeding mechanism, and to illustrate the dual function thereof, namely, as an escapernent for letter and word spacing, and as a releaseand stop device for tabnlating, there is shown in the drawings the key and ty e action connections coiiperating therewit As shown, the upright og lever 5 has a rod connection 21 with a swinging yoke lever 22 carried by a motion transmitting element 23 supported by the base of the carriage, such lever 22 being engaged at the top by suitable connections 24, cooperating with the universal bar 25 of the type action. A ainst this universal bar operates the key lever 26 having a suitable operating connection 27 with the type bar 28, as plainly shown in Fig. 2 of the drawings.

In connection with the construction de- I scribed, the tabulator adapted thereto essentially consists of the said carriage feeding mechanism, and a trip mechanism controllable through selectors or keys independent of the type action keys. This trip mechanism comprises an adjustable column locating element 29, and a series of tripping denominational releasing elements 30 cooperating w1th the release member or lever 16, of the s ear the number of columns to be printedupona' sheet or page, but" for the sake of clear-mess, only one of such elements is referred to herein,

The said adjustable column locatingelement' 29 maybe constructed and mounted in any suitable manner, but the construction shown it essentially consists of a. collar or sleevegmember of approximate U form in crosssec-tion andadapted to beplaced'astrid'e of a holding-bar 31carried by ,the' track frame I in anynsuitab le manner, said holding bar-31 being usually rigidly supported'ili substantial parallelism'to the rear track-rail 4,.a's plainly illustrated inthe several figures of'the draW- travel of the carriage, and'is usually provided inone face thereof with a 'series-oflocking' notches, teeth, or ratchets 32 I adaptedfto be engaged by an inwardly deflected catch tooth -33 bent in from the vterminal of one side wall of, the collar". body, or otherwise suitably formed, to provide means for locking the column locating element against movement inan outward direction,

. permits the said'colunm-locating elementor',

collar to be adjusted to any pos tion within the extent of themachi'ne scales-to provide for locating the columnat any desired point.

V -tion the column locating. elementQQ-Ifia'y v According to the-adaptation,ofthe inven form a fixed stop, ormerely-joperate as an actuator for other elements of the mecharifl ism. In the form of mechanism bein def- 'v locating element 129,- is provided thereon,. preferably at one side, ith-an inclined flange 34fconstitu i l g a trip-actuating -bevel or QcamPadapted to be engaged by the tapp'et l ar m'r35 pendent from the interfering, or rear 1 end portion ,'of each ofthe individual de 5 nominational theseleotorsor keys;- Qrdinarily, the individual denominational elements "controllable by the keys or l.

elements 39 controllable from,

, l'ectors r epresent one.- spaee the column of},

a Mer to; bfintered, and i 'n' i' ark; om na ion lements 1s? ,spectively represent" the "unit's, tens, hun

, deed I thousands}; t'en thousands; 'hundred- J thousands, millions; ete, .spaces,fand: there Thel'present invention o.bviate's f-thes neccs' :sity; ofthus multiplyin key; 1 1 1 selected}denomination eleinents ,'andonly e0 f the deneniinationfalfgrou The bar3l is of a length equaling-the full 7 ma sage ofsetting forth the exact actio1i 'of the insimply 'a grou of three individual denomispectivelyrepresentunits, tens, and hunamplifier hereinafter. described may be :ad'apted' for action in' any of. the. denominational groups, totabulate for units, tens, or

hundreds of thousands, of millions," of bil- -lions,-iandiso on. Thus the term denomina tional-groups has reference to the separate groups of denominational-factors,viz. first denominational group being units, tens, and

hundreds the second denominational group being units. o'f thousands, tens of thousands,

and so 11;, I v

- Referring more particularly ,to the mount- .ing 'of-the-individual 'denominationalsele-i v fments 30, it is understood that usnallythe same are arranged side by; sidelata letter space distance apart, but in the construction a 1 vention; the' drawings are restricted, to- I national tabu ating elements 30, which re' clre ds, and which through themedium of the so. I

own'i these elements may be mounted .to

ranging guide consists of a slotted plate or bar fastenedvto the. under side of the base. 1,. ,and interchangeably receiving the pendent "tappet armsfloffthe denominational .tabulat 1 7 'ingelements; 1 Each'pof the said denomina ,ftional tabulating 'or-releasing elements. 30 is arranged'with -itsipendent tappet arm-35 pro i I jecting thfOligha'cl'earance openingiorslot 37' scribed, the collarfconstituting' the co provide forvarying the spaced relation there- 11Stmctionf1f0'f through the medium of a stationary column arranging "guide '36., Thiscolumn are-- with-a'horizontally'dis osed'enga ingfinger- 35, s'lid'alol -yiresting in t 'e guide or racket 36' hereof;, 'eechfof Sa d def and whose point 'is'adapted to bemoveclin and I ,out of the pathof interference with reference;- to the trip actuating-bevel or cam 34, of the col lilii li*l0cating element 29. ln additionto the. pendent 'tappet arm 35' at the j'rear inter feringj end portion 1t nomina'tional tabii el'emer'its130 ispr.0.

as or ottoni'lplate 'lan'd e es; to

.fore the same' elements miljstgbemulti flied't'oi 'referencell' w apresently': made. Also, uit .the range jof the-tabulatmg mec "anismi i-eael of jth denominational "tabu'lating ele:

.I yidedipref'erablyj. wit in it l-ie" rear end corner I 'th ki -Supplemental trip shoulder 38- andjnto interfer'- to \the'denomina-jwhich; particular,

meet 3e is. 1pmvid d at a ,p' infi; intermedi sends h reof; with j are catch 40 in the form of ashou-lderfor suit'ab eprojection smelly-11mg 'at orii side, j and -=withini the ar ia e eedii-ig--rnechanism, sethat when the' si-aga' list ith lever 1Qinla'filirection"'fondisens.

-12 5 or zjont l 'l-,- plane,- of' the release lever, l 6 ofthe re eii eiee el e t-80 $d w i e dt gln adirection-for setting,1the catch .40v presses 1130 gaging the'clutch 11 from the star wheel 8, thereby releasing the carriage to permit the advance thereof under the-impulse of its ac tuator. The same movement which accomplishes this result draws the on aging fin er of the ta pet arm 35 into a at of inte ere ence wit the member 34 o .the columnlo cating stop. Thus, when the carriage reaches the point where the entry of the item is to commence the tappet. arm 'of the'selected denominational element will engage with and ride upwardupon, the trip actuatingbevel or cam 34 with the result of raising the de nominational element 30, and trippin the catch 40 thereof out of engagement with release lever 16, whereby the clutch of the feeding mechanism is ermitted to automatically become reloc ed with the star Wheel, thus restoring the carriage feeding mechanism to a locked condition and servingto check or arrest further movement thereo untilthe writing commences. Also, each of "the denominational tabulating elements 30 has its own controlling means in the form of a selector or key preferably operable at the keyboard ofthe machine; 'An suitable selectors or keys may be associate with the denominational tabulating elements, such, for instance, as the sim le arrangement shown in the drawin s in which each element 30 is illustrated as aving its forward end pivotally connected, as at 41, to the lower arm of'a bell crank lever 42 ha i a suitable pivotal. support at its angle, an 'whosempperarm has a-pivotal connection, as at 43, t0 the lower end of the stem of'a selecting key44; The bell cranks for the several denominational elements 30, and, the selecting keys44 therefor may be mounted .in any suitable manner, but preferably in connection with the flanged guiding bracket 45 projected from one'corner ofthe carriage casing, and occupying a position at one'end of the keyboard so that the selecting ke s will practically constitute a art 'of e"key 'oard.

Furthermore, there is associated with each of the key controlled levers 42 a' suitably arran ed resetting spring '46 serving to return t e parts of the tabulator to normal ine active ositions when released.-

As aready indicated, the present invention centers upon the employment of the de'-,,

nomination'al amplifier 39 which cooperates with each of thedenominational tabulating velements 30 andalso with the column locating element; In the particular adaptation of the invention, shown 1n Figs. 1 to 9,'1 nclusive, the amplifier acts in the capacity of a suppl emental 'or auxiliary tripping means for the denominational tabulating elemente, and, in a broad aspect, constitutes an extra interference which is projected or thrust into the interval between the denominational or key selected element, and the column locating element.

the

(({preferably beneath) of the small group of this aspect of the invention, the shiftable spacer element or plate 39 constituting the the carriage base or bottom 1, beneath the individual denominational elements 30, and

lever arm 47 extendinglorwardly over the base of the carriage,. and having a pivotal arm of a'main actuator 48 adapted to have a movement of variable amplitudeiunder, the actuation of a plurality ofgroup. selecting Ordinarily, a pair'of group selecting keys, desi ated respectively by the reference num ers 49 and 50, is employed when the range ofthe tabulator extends to entries of hundreds of millions, but itjwill of course be- .understood that there maybe otherof said group selectin keys should it"be desired to provide a tabulator for working int-o billions, etc. The number of group selecting keys for theamplifier does not change the number of main-*tabulating keys 44' which ordinarily represent units, tens and hundreds in any denominational group, but in all adaptations of theinve'n'tion the group selecting keys that each gr'ou selecting key will move the actuator 48 an hence the amplifier 39, a different distance. To rovide for this,'in-the construction shown, t e main actuator 48 is one arm of a bell crank lever having a pivotal "support- 51 upon-a pivot fitted to the carriage base, and whose other arm is designated by the-reference number 52-and has connected 'with 'the terminal thereof the laterally extending'kev stem 53 carrying at its outer end the key 49 havf a movement inward. toward the adjacent si e of the carriage and limited in such movement by said side. At the terminal of its arm 52 the bell'crank actuator -48 is provided with an? upstandnig abutment ed the group selecting key 50, which like the is carried at one end of a suitablyformed "must be so related tothe main actuator 48 also having a player movement at oneside enominational tabulating elements 30. In

amplifier proper is illustrated as having a sl'idable movement in two directions upon 7 connection at its front end, as at 47 ,to one frame. v

For illustrative ,purposes, it will be 'u nderstood that the group selecting key 50 V will designate the thousands denominational group and the key, 49 will designate the mil-. lions'denominational group, and byreason' hey. 49 has movement toward, and is limitedb y, the adjacent side'of the carriage of the different lengths of the separate lever member 52 and 5 6 the'main actuator 48 has,

a movement of greater or less extent accordto which one ofthe group selecting keys 1s pressed inward against the'lim-iting stop therefor, l

:The main actuator, 48, andthe' group selecting keys associated therewith,- are re-,

r arm 47,,and the: adjacent sideedgeof the carriage, said spring performs-the dual function. of, retracting the lever arm 47 for-Q wardly to its normal at-rest position and,

tracted to normal positions through the medium of a 'readjusting'spring58 having a fixedpoint of attachment at one end,-as 'at 59,- upon the carriage base or bottom 1 ,and

- extending at an angle from such connection to a point ofconnection 60 upon thelever -arm 4.7 at a point intermediate the end of said arm. -Byarranging the re adjusting spring 58 in the interval'between the lever also laterally to 'a -non interfering' position with; reference to the individual denomina .tional t'ab1'1latinjg elements 30, "and the a col,-

umn'locating'element 29. i

The efiective features 'otthe denomina;

; tional-amplifierreside in the provision there-- ofwi'th means for efiectinga spacing to check -the carriage for printing in the higher de-Q nominational groups, and for trip-ping the selec'ted denominat-ional tabulating element, I W henthe checking'point has been reached. In the construction which has j ust'" been detailed, this is accomplished by-pr'ovi ding the spacer element or plate 39, constituting' the amplifier proper, with a pendent spacer con-J, .k tact-61' in the form ofafinge'r adapted to,

cooperate with the spacing stcpor steps '62 carried 'by, the column locating element 29 also with a'n' upstanding beveled checking 'detenfi-gor tr'ipactuator, 63, adapted to be movedund'er'and against the supplemental.

trip. shoulder-38' of the selected denomina lIQ I M 3O i -WI), into play;

1 fiIn-thefnormal position ofparts, the a'm p'lifierzo r' sp'acelj' elementBQ is 'drawnforward 'Withlits checking 'dete'nt 63'out'of operative relationtot-he supplemental trip sl1oulde1w38' ,of 'all of the denominational elements 30,- and.

I ;is;also.held in agposit-ion' with the spacer conelement "29. ,{2At this point it wi11; be ob- "served that the i spacin'g steps 62 are in the form's ofstuds or proj ections projected from tact ,61 outjof the path-Iof interference with] the. spacing steps 62" on the. column locating the bodyot the" column 'locatingjelement 29,

2 5 e d: arran d inawhu -'..may' ec y fwithout the use of the amplifier.

termed stepped order, at a stated distance from each other, in order that the amplifier may come into play according as it is ad- :justed foraoperating in the thousands'or millions denominational groups. In further 7 explanation of the action of the denomina tional am lifier vinits-relation to the column locating e ement, and the individual denominationalelements'30, it has been noted for clearness that the individual elements 30 rep- 7 resentrespectively units, tens, and hundreds, andhenceindividually provide for tabulating numbers of one, two or three figures v For instance, to provide for'locating in the column a number with three figures, such as 100, the hundreds key 44 isdepressed so as to draw the hundreds denommational element 30 into an interfering path with reference to the trip 'actuatingbevel 34 of the column sands, tens of thousands, hundreds of thou-- locating element] so that the carriage,

through thetripping action previously described, Will be arrested three spaces in advance of the decimal or-column point. I The entry of a number with one or two.

figures will beprovided for by depressing the.

units or tens tabulating or selecting keys 44,

but to provide forcolumnating numbers in the thousands or millions denominational groups, the amplifier must be brought into play to provide for locating units of thousands, or units of millions,. tens-of millions,

.or=hu'ndred s of millions, etcgas the case may beyrFor instance, to provide for coiumnating an entry 0f710,000 the tens tabu-- lating keyisdepressed to draw/the tens de nominational element3Q-forward to an active position and at the same time release the carriage feeding mechanism. At the same time,

path I of interference with e reference to the i'sp acing-s tep 6 2 nearest the decimalpoint,

and ,atthe same time carrying the bevel checking or tripping detent 63into the transverse plane of tlie'supplement-a-l trip shoulder 38 0f the selected element 30. .lVith thepart fthus positioned, the carriage movesforward,

under the "impulse of its actuator, until the spacer contact 61 comes into engagement withthe-aforesaidspacing step 62, and the continued drawing, pressurelof the. carriage actuator causesf'the amplifier or spacer ele-v ment 391150 move transversely beneath the individual,denominational elements 30- so as to carry its checking or tripping detent 63 i forcibly against the shoulder 38 of the selected elernent 3l),1 With the consequence of causring the lat e to automatically rise and mp I with the result of permitting the carriage y out of engagement with the release lever 16,

fe'eding mechanism to become automatica relocked, and thus form a positive stop or check for arresting further advance of the carriage. This stopp' advance of the column locating point to providethe pro er startin point forbeginning the entry 0 the ten-t ousand item in the column. If the item isin the hundred of thousands, the hundreds tabulatin key 44 is o' era'ted in conjunction with t e thousan 3 group selecting key 50, and the. same aotionas described takes. place with the exception of stopping the carriage a suflicient number of spaces 1n advance of the column locating point to enter the item.

If the entry is for units ofthousands, such as 1,000, the units tabulati'n'g key is operated v A in conjunction with the thousands group se-' lecting key 50, but where the item to be entered'amounts to units, tens, or hundreds of millions the proper one of the keys 44 is operated in con unction with the millions group selecting key 49, which, on account of the shorter radius of the lever arm 52, provides a greater amplitude of movement for the main actuator 48, with the consequence of moving the amplifier or spacer element 39 a greater distance rearward to bring its spacer contact 61 in the-path of interference with the spacing step, 62 which is the. greatest distance from the decimal or column point.

' In connection with the movement'of the spacer element or amplifier proper 39 it is to be observed that thebase or bottom of the car riage may be formed with a clearance opening or slot 61*" of sutficient extent to-accommodate the movement of the spacer contact 61 in both directions in which it operates. An obvious modification of the invention-is suggested in Figs. 10, 1-1 and 12 of the draw ings, which modification simply involves reversing the cooperating members of the am-- plifier proper and of the column lo3ating ele ment, but preserving thesame operative relation of such elements. Instead of having the stepped series of spacingsteps upon the column locating element,- the modification referred to contemplates providing the amplifier or spacer element, designated by the number 39 in the modification, with a series of spacing steps 62 arranged in stepped order and providedin any convenient manner, such as bending flanges of fingers from the'body of the element or amplifier. The said spacer element or amplifier 39 is otherwise of the same construction and operates in exactly the same manner as already described, but the spacing steps 62* which are arranged in stepped order, or different transverse planes, are designed to cooperate with a single spacer contact 61 projected from the column locating element 29 and subserving or arresting of the carriage takes place at t e proper distance in the same. function as the spacer contact 61 accomplishes all of the results herein before indicated.

zThe adaptations of the invention already described involve the association thereof with a mechanism which includes the carriage feeding mechanism as the. stopping or checking medium, but as the denominational amplifier is susceptible to a wide range of a plication in connection with different kin s' of typewriters, and different forms of tabulating mechanisms, the construction illustrated in'FigsL 13 .to 1 "6,,-' inclusive, is shown to illustrate the'adaptability of the amplifier to a tabulating mechanism of the ordinary previously referred .to.- This modified construction simplifies the formation of the column locating-element, and at the same time stop or impact type. In this phase, the amplifier still performs the function of an extra interference-projected into the interval between a selected denominational element and a column locating point, and referring particularly to the suggested construction, shown in the figures of the drawin s referred to,-

it is to be notedthat the tabu ator indicated I there n essentially consists of a series of individual. denominational elements 30 of the slidable plunger type, and arranged side by side upon the carriage frame or base. ,These plunger denominational elements 30 may be mounted in a suitable "guide65 provided therefor, and each has-connected with its front end an actuating key; connection '44; =subserv1ng-the same function, and maintain ing the same relation as the key connections 44.described. with the other modifications. The elements 39 are arranged a letter space distance apart, and the rear impact points 66 thereof are disposed a letter space-distance apart and are normally'retracted out of the path of interference with a column locating stop 67, which'may be in-the form-of a U- -shaped cuff adjustably engaged ,with' the notched holding rack68,' corresponding m .position' and function to the holding bar 31 previously descril: ed.- This construction represents a common type of'tabulating mechanism of the stop or impact form, and the elements 30 are adapted to be individually projected into the path of the stop 67 so that the movement of the carriage will be arrested solely bythe impact of the elements with the a shiftable spacer element, a main actuator for said spacer element, and a'plurality of group selecting keys having a lever throw of different amplitude and-operatively related to the said main actuator.

11. A tabulating mechanismcomprising a column locating element, a series of 'denom1- national elements, and an amplifyingdevice co-actmg with the said elements and comprising'a'shiftable spacer element, a lever,

arm carrying the ,spacerelement, a swinging main actuator connected with said lever arm,

7 national elements,.and. an amplifying device co-actmglwltl-i said elements and "comprising 20. a shiftable spacer element, a lever arm carryand group selecting keys of different throw bearingoperative relation to said main actuator.

12. A tabulating mechanism. comprising a Column. locating element, a series of denomi- .ing 'said spacer element, a bell crank lever 'videif therefor i a movement of variable mp iaae.-,

having one arm-connected'with the said lever arm to constitutefthe mainactuator and hav.. ing a group 'sele'cting key connected with its other; arm, '1 said latter Zarm having an .abu t5 ment 'p'roj e'ction, and a fsecond'r group. select ingk'eyhavid is long lever arm inountedon; the pivot of t e: bell crank and cooperating.

with 'the abutment projection thereof.' [1,3. Atabulating mechanism comprisinga having a, pi voftal 1 support andioperatively ,;1 4.; A tabulatingi rhech nim' comprisingfa colunmlocatingelement,aseries of denomination elements,- and emf-denominational anipl fierhaying a movement into and out of the path-ofjthe columnloc'ating element, andin aidirection toward and from the denominational elenients.

ment andma u idenomlinati'onal]elements,I y

5 i 1 6! A *tab'ul'ating.mechanism; comprising a column locating element, .a series;jof.de nomi' 'national' elements; a denominationalfamplie .fien-co-acting'm'i h "said elements and having a Variable movementinto the' path of the col- 15.] Atabulating mechanism comprising a f column locating element, a] seri'esof denomi-- national elements,"j'and'a denominational am plifier having afvariablefmovement into and chines, a carriage feeding mechanism, a trip out ,of theipath" of the column locatingeleu'mn" locating element, said amplifier also having?a movement.toward and from the denominationa'l; elements, in cooperation with the [selected denominational element, and,"

d'ire'ction towardand from the v selectors for restoring the feeding mechancommon means for returning the amplifier to and from the selected denominational element, a lever armcarrying the spacer element, means for moving the spacer element into a path of interference with the column locating element, and a re-adjusting spring connected with thesaid lever arm and arranged in a position for retracting the spacer element to a normal inactive position from movement beneath the denominational elements' for cooperation with the selected one of the latter.

19. In a tabulator: for typeyvriting machines, the 'carriage feeding mechanism, a

trip 'i'nechanism comprising key controlled means for releasing thefecding mechanism and -th'en automatically restoring it to a locked condition atvariable distances from a -predet'ermined point to .effect a stopping ofthecarriage by such 'reng'agem'ent alone,

and means for amplifying the spacing value of each key controlled element of said mechanism whereby each key controlled element f 2 0. In a tabulator for typewriting machines, a carriage feeding mechanism, a trip mechanism comprising key. controlled means for releasing the feeding mechanism and then ate] the trip mechanism and comprising me'anslforamplifyingthe spacing value of .each key controlled'element thereof.

1 21. Iniaf tabulator for typewriting mamechanism having means [Controllable by ism to locked condition for checking the car- '-riage at, agiven distance from a predeterkey conis 'o'pera'ble forchecking the carriage at variable distances from the columnpoint.

ment imp rting kwithir'lioth lthe feeding mechanism; and said .colu1nn locating ele- 'm'ent, and'fseparate means for amplifying-the I ,spacin value of said rel'easing elements.

"5; 23].. n aitabulatorlfor'itypewritingmachines, acarria e'gfeedingmecha'nism, atrip.

mechanism fem odying a'n adjustable, col- -locating elenient,"-a key controlledre- 7 leasing element cooperating. with be th the 10 ielement anda denominational amplifier cooperating, with the. column ylocating ele-" ment and the-releasing element, 's'aid'amplie ,fier". comprising means Iffor; amplifying the ing ele-rnent, a' key eont'ro led releasin ele ment operatively' related to both the co umn flo'catingelement'and the feeding, mechanism a'ndhaving atrippin connection with the latter, and a separate y controlled amplify 'ing' device having an actuating engagement with the releasin element.

-chine's,;a carriage feeding mec v trip mechanism embody-mg a column locat refeasing elements coeacting with both the column locatin element and the feeding mechanism and aving an operative tripping connection With theflatter, and a separately controlled amplifying device having an actuating enga ement Withthe selected denominational re easin x element.

26.- In a tabu ator for'typewriting machines, a carriage feed ng mechanism, and atrip mechanismembodying a column locating element, and a plurality of releasing elements having individual selecting actuators, and co-acting with both the column locating element and the carriage feeding mechanism, said releasing elements having a tripping connection, with the carriage feeding mechanism, and a separately controlled amplifying device adapted to have an actuating en-.

gagement with the selected releasing element. v

27. In a tabulator for .typewritingmachines, acarriage feeding mechanism, a trip mechanism embodying. a column locating element, and a key controlled releasing elementnormally ioutflof operative relation to the column locating element and co-acting both with the latter and the said carriage feeding mechanism, said releasing element having a tripping connection With the car riage feeding mechanism, and a separately controlled, normally inactive, amplifying A device adapted to have an actuatingengagement with the selected releasing element. 28 In a tabulator for. typewriting machines, a carriage feeding mechanism, and a 6'5 trip mechanism embodying a "column locatfeeding mechanismand s-aid column locating ewriting' ma:

f;.25.- In a tabn ator for typewriting maanism, and.a.'

selected releasing bar. element, a plurality of denominational ing element, 'and a plurality 6f releasing elementsf'arrangedJn spaced "relation and each and 'out' of interfering relation to the colu mn locatingv element, all/rof-sai'd releasing elements 'falsd having "an operative tripping connectio'n w'ithl the feeding mechanism, and a separately controlfled" normally inactive amplifyingfd evice adapted to be adjusted to -,an interfering. relation with reference to the having;an individuat selecting actuator and I a' tappet; memben-adapte'd :to be moved m1 .column, I c'atingelement -and' .the"- selected 4 chines, a carriage, feedingmecnanism, a trip 'mechaniem comprising a holding, bar, a columnjlocating element arranged for adju'st-' ment upon the bar 1 and having an engaging portion,, and a series of keycontrolled 'siide able releasing bars operatively related to the trolled normally inactive amplifying device adapted to be projectedinto interfering re-' lation-to the column-locating elementand the v 30.. In a ta'bulatorfor typewriting'machines, a carriage feeding mechanism emcarriage feeding mechanism and having conb'odying a'clutch and a disengaging member for said clutch, and a trip mechanism for releasing and- {resetting the feeding mechanism, saidtrip mechanism including key controlled elements having a tripping engagement with said disengaging member of the clutch, and aseparately controlled normally inactive amplifying device adapted to have an actuating engagement with theselective one of the key controlled elements ofthe trip mechanism.

31. In a tabulator for typewriting machines, a carriage' feeding mechanism embodying a clutch and a disengaging member for the clutch in the form of a lever, anda trip mechanism, said. trip mechanismcomprising a column locating element and a plurality of longitudinally slidable and vertically movable releasing bars having individual selecting keys for actuating thesame,

and provided with a pendent member co-- I locating elementand the selected releasing bar, said ampllfying device being adapted to have an-actuating engagement with'the selected releasin f bar.

v '32; Ina ta bulator forty ewriting machines, a carriage feeding mechanism having -adisengagingmember, a trip mechanism having key controlled elements co-acting with said di engaging member, and a separately controlled normally inactive amplifying device adapted to have an actuating enga ement with the Selected key controlled element of the tripping mechanism.

33. In a tabnlator for ty ewriting machines, a carriage feeding mec anism, and a trip mechanism comprising a holding bar, a cell mn locating element arranged for adjr stment upon the bar and having an engag- 'ing portion, and a'plurality of s acing steps,

a series of key controlled siida le releaslng" Jars operatively related to the carriage feeding mechanism and having endent contacts adapted to be moved in an out of interfering relation with reference to the said engag ing portion of the column locating element, and a separately controlled amplifying device embodying a norm-ally inactive shiftable spacer element having a spacer contact adapted. to be projected into interfering relation with reference to the individual spacing steps, said spacer element also having a checking detent arranged to become engaged 25 In testimony whereof we afiix our signawith the selected releasing bar. 

